diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a83cd28..715d3317 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
+v3.1.2 - Mon, 06 Nov 2017 19:52:38 UTC
+--------------------------------------
+
+- [0f2bf9e](../../commit/0f2bf9e) [fixed] corretly walk when using TAB.
+- [5cf9326](../../commit/5cf9326) Update README.md
+- [cdcc1cb](../../commit/cdcc1cb) [chore]: fixed changelog generator.
+
+
 v3.1.0 - Wed, 25 Oct 2017 14:26:17 UTC
 --------------------------------------
 
diff --git a/bower.json b/bower.json
index 89662c45..efb4774b 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "react-modal",
-  "version": "3.1.0",
+  "version": "3.1.2",
   "homepage": "https://github.com/reactjs/react-modal",
   "authors": [
     "Ryan Florence",
diff --git a/dist/react-modal.js b/dist/react-modal.js
index 5cf2529f..c7fc368a 100644
--- a/dist/react-modal.js
+++ b/dist/react-modal.js
@@ -82,11 +82,9 @@ return /******/ (function(modules) { // webpackBootstrap
 
 /**
  * Copyright (c) 2013-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  *
  * 
  */
@@ -124,11 +122,9 @@ module.exports = emptyFunction;
 "use strict";
 /**
  * Copyright (c) 2013-present, Facebook, Inc.
- * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  *
  */
 
@@ -184,12 +180,10 @@ module.exports = invariant;
 
 "use strict";
 /**
- * Copyright 2013-present, Facebook, Inc.
- * All rights reserved.
+ * Copyright (c) 2013-present, Facebook, Inc.
  *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  */
 
 
@@ -210,12 +204,10 @@ module.exports = __WEBPACK_EXTERNAL_MODULE_3__;
 /***/ (function(module, exports, __webpack_require__) {
 
 /**
- * Copyright 2013-present, Facebook, Inc.
- * All rights reserved.
+ * Copyright (c) 2013-present, Facebook, Inc.
  *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  */
 
 if (undefined !== 'production') {
@@ -237,7 +229,7 @@ if (undefined !== 'production') {
 } else {
   // By explicitly using `prop-types` you are opting into new production behavior.
   // http://fb.me/prop-types-in-prod
-  module.exports = __webpack_require__(15)();
+  module.exports = __webpack_require__(16)();
 }
 
 
@@ -247,12 +239,10 @@ if (undefined !== 'production') {
 
 "use strict";
 /**
- * Copyright 2014-2015, Facebook, Inc.
- * All rights reserved.
+ * Copyright (c) 2014-present, Facebook, Inc.
  *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  *
  */
 
@@ -270,45 +260,43 @@ var emptyFunction = __webpack_require__(0);
 var warning = emptyFunction;
 
 if (undefined !== 'production') {
-  (function () {
-    var printWarning = function printWarning(format) {
-      for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
-        args[_key - 1] = arguments[_key];
-      }
-
-      var argIndex = 0;
-      var message = 'Warning: ' + format.replace(/%s/g, function () {
-        return args[argIndex++];
-      });
-      if (typeof console !== 'undefined') {
-        console.error(message);
-      }
-      try {
-        // --- Welcome to debugging React ---
-        // This error was thrown as a convenience so that you can use this stack
-        // to find the callsite that caused this warning to fire.
-        throw new Error(message);
-      } catch (x) {}
-    };
+  var printWarning = function printWarning(format) {
+    for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+      args[_key - 1] = arguments[_key];
+    }
 
-    warning = function warning(condition, format) {
-      if (format === undefined) {
-        throw new Error('`warning(condition, format, ...args)` requires a warning ' + 'message argument');
-      }
+    var argIndex = 0;
+    var message = 'Warning: ' + format.replace(/%s/g, function () {
+      return args[argIndex++];
+    });
+    if (typeof console !== 'undefined') {
+      console.error(message);
+    }
+    try {
+      // --- Welcome to debugging React ---
+      // This error was thrown as a convenience so that you can use this stack
+      // to find the callsite that caused this warning to fire.
+      throw new Error(message);
+    } catch (x) {}
+  };
 
-      if (format.indexOf('Failed Composite propType: ') === 0) {
-        return; // Ignore CompositeComponent proptype check.
-      }
+  warning = function warning(condition, format) {
+    if (format === undefined) {
+      throw new Error('`warning(condition, format, ...args)` requires a warning ' + 'message argument');
+    }
 
-      if (!condition) {
-        for (var _len2 = arguments.length, args = Array(_len2 > 2 ? _len2 - 2 : 0), _key2 = 2; _key2 < _len2; _key2++) {
-          args[_key2 - 2] = arguments[_key2];
-        }
+    if (format.indexOf('Failed Composite propType: ') === 0) {
+      return; // Ignore CompositeComponent proptype check.
+    }
 
-        printWarning.apply(undefined, [format].concat(args));
+    if (!condition) {
+      for (var _len2 = arguments.length, args = Array(_len2 > 2 ? _len2 - 2 : 0), _key2 = 2; _key2 < _len2; _key2++) {
+        args[_key2 - 2] = arguments[_key2];
       }
-    };
-  })();
+
+      printWarning.apply(undefined, [format].concat(args));
+    }
+  };
 }
 
 module.exports = warning;
@@ -494,7 +482,7 @@ Object.defineProperty(exports, "__esModule", {
 });
 exports.canUseDOM = undefined;
 
-var _exenv = __webpack_require__(20);
+var _exenv = __webpack_require__(21);
 
 var _exenv2 = _interopRequireDefault(_exenv);
 
@@ -556,7 +544,7 @@ var _propTypes = __webpack_require__(4);
 
 var _propTypes2 = _interopRequireDefault(_propTypes);
 
-var _ModalPortal = __webpack_require__(16);
+var _ModalPortal = __webpack_require__(17);
 
 var _ModalPortal2 = _interopRequireDefault(_ModalPortal);
 
@@ -790,12 +778,10 @@ module.exports = __WEBPACK_EXTERNAL_MODULE_12__;
 
 "use strict";
 /**
- * Copyright 2013-present, Facebook, Inc.
- * All rights reserved.
+ * Copyright (c) 2013-present, Facebook, Inc.
  *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  */
 
 
@@ -803,9 +789,10 @@ module.exports = __WEBPACK_EXTERNAL_MODULE_12__;
 var emptyFunction = __webpack_require__(0);
 var invariant = __webpack_require__(1);
 var warning = __webpack_require__(5);
+var assign = __webpack_require__(14);
 
 var ReactPropTypesSecret = __webpack_require__(2);
-var checkPropTypes = __webpack_require__(14);
+var checkPropTypes = __webpack_require__(15);
 
 module.exports = function(isValidElement, throwOnDirectAccess) {
   /* global Symbol */
@@ -901,7 +888,8 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
     objectOf: createObjectOfTypeChecker,
     oneOf: createEnumTypeChecker,
     oneOfType: createUnionTypeChecker,
-    shape: createShapeTypeChecker
+    shape: createShapeTypeChecker,
+    exact: createStrictShapeTypeChecker,
   };
 
   /**
@@ -1116,7 +1104,7 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
       if (typeof checker !== 'function') {
         warning(
           false,
-          'Invalid argument supplid to oneOfType. Expected an array of check functions, but ' +
+          'Invalid argument supplied to oneOfType. Expected an array of check functions, but ' +
           'received %s at index %s.',
           getPostfixForTypeWarning(checker),
           i
@@ -1170,6 +1158,36 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
     return createChainableTypeChecker(validate);
   }
 
+  function createStrictShapeTypeChecker(shapeTypes) {
+    function validate(props, propName, componentName, location, propFullName) {
+      var propValue = props[propName];
+      var propType = getPropType(propValue);
+      if (propType !== 'object') {
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type `' + propType + '` ' + ('supplied to `' + componentName + '`, expected `object`.'));
+      }
+      // We need to check all keys in case some are required but missing from
+      // props.
+      var allKeys = assign({}, props[propName], shapeTypes);
+      for (var key in allKeys) {
+        var checker = shapeTypes[key];
+        if (!checker) {
+          return new PropTypeError(
+            'Invalid ' + location + ' `' + propFullName + '` key `' + key + '` supplied to `' + componentName + '`.' +
+            '\nBad object: ' + JSON.stringify(props[propName], null, '  ') +
+            '\nValid keys: ' +  JSON.stringify(Object.keys(shapeTypes), null, '  ')
+          );
+        }
+        var error = checker(propValue, key, componentName, location, propFullName + '.' + key, ReactPropTypesSecret);
+        if (error) {
+          return error;
+        }
+      }
+      return null;
+    }
+
+    return createChainableTypeChecker(validate);
+  }
+
   function isNode(propValue) {
     switch (typeof propValue) {
       case 'number':
@@ -1307,14 +1325,109 @@ module.exports = function(isValidElement, throwOnDirectAccess) {
 /* 14 */
 /***/ (function(module, exports, __webpack_require__) {
 
+"use strict";
+/*
+object-assign
+(c) Sindre Sorhus
+@license MIT
+*/
+
+
+/* eslint-disable no-unused-vars */
+var getOwnPropertySymbols = Object.getOwnPropertySymbols;
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+var propIsEnumerable = Object.prototype.propertyIsEnumerable;
+
+function toObject(val) {
+	if (val === null || val === undefined) {
+		throw new TypeError('Object.assign cannot be called with null or undefined');
+	}
+
+	return Object(val);
+}
+
+function shouldUseNative() {
+	try {
+		if (!Object.assign) {
+			return false;
+		}
+
+		// Detect buggy property enumeration order in older V8 versions.
+
+		// https://bugs.chromium.org/p/v8/issues/detail?id=4118
+		var test1 = new String('abc');  // eslint-disable-line no-new-wrappers
+		test1[5] = 'de';
+		if (Object.getOwnPropertyNames(test1)[0] === '5') {
+			return false;
+		}
+
+		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
+		var test2 = {};
+		for (var i = 0; i < 10; i++) {
+			test2['_' + String.fromCharCode(i)] = i;
+		}
+		var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
+			return test2[n];
+		});
+		if (order2.join('') !== '0123456789') {
+			return false;
+		}
+
+		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
+		var test3 = {};
+		'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
+			test3[letter] = letter;
+		});
+		if (Object.keys(Object.assign({}, test3)).join('') !==
+				'abcdefghijklmnopqrst') {
+			return false;
+		}
+
+		return true;
+	} catch (err) {
+		// We don't expect any of the above to throw, but better to be safe.
+		return false;
+	}
+}
+
+module.exports = shouldUseNative() ? Object.assign : function (target, source) {
+	var from;
+	var to = toObject(target);
+	var symbols;
+
+	for (var s = 1; s < arguments.length; s++) {
+		from = Object(arguments[s]);
+
+		for (var key in from) {
+			if (hasOwnProperty.call(from, key)) {
+				to[key] = from[key];
+			}
+		}
+
+		if (getOwnPropertySymbols) {
+			symbols = getOwnPropertySymbols(from);
+			for (var i = 0; i < symbols.length; i++) {
+				if (propIsEnumerable.call(from, symbols[i])) {
+					to[symbols[i]] = from[symbols[i]];
+				}
+			}
+		}
+	}
+
+	return to;
+};
+
+
+/***/ }),
+/* 15 */
+/***/ (function(module, exports, __webpack_require__) {
+
 "use strict";
 /**
- * Copyright 2013-present, Facebook, Inc.
- * All rights reserved.
+ * Copyright (c) 2013-present, Facebook, Inc.
  *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  */
 
 
@@ -1348,7 +1461,7 @@ function checkPropTypes(typeSpecs, values, location, componentName, getStack) {
         try {
           // This is intentionally an invariant that gets caught. It's the same
           // behavior as without this statement except with a better message.
-          invariant(typeof typeSpecs[typeSpecName] === 'function', '%s: %s type `%s` is invalid; it must be a function, usually from ' + 'React.PropTypes.', componentName || 'React class', location, typeSpecName);
+          invariant(typeof typeSpecs[typeSpecName] === 'function', '%s: %s type `%s` is invalid; it must be a function, usually from ' + 'the `prop-types` package, but received `%s`.', componentName || 'React class', location, typeSpecName, typeof typeSpecs[typeSpecName]);
           error = typeSpecs[typeSpecName](values, typeSpecName, componentName, location, null, ReactPropTypesSecret);
         } catch (ex) {
           error = ex;
@@ -1372,17 +1485,15 @@ module.exports = checkPropTypes;
 
 
 /***/ }),
-/* 15 */
+/* 16 */
 /***/ (function(module, exports, __webpack_require__) {
 
 "use strict";
 /**
- * Copyright 2013-present, Facebook, Inc.
- * All rights reserved.
+ * Copyright (c) 2013-present, Facebook, Inc.
  *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  */
 
 
@@ -1427,7 +1538,8 @@ module.exports = function() {
     objectOf: getShim,
     oneOf: getShim,
     oneOfType: getShim,
-    shape: getShim
+    shape: getShim,
+    exact: getShim
   };
 
   ReactPropTypes.checkPropTypes = emptyFunction;
@@ -1438,7 +1550,7 @@ module.exports = function() {
 
 
 /***/ }),
-/* 16 */
+/* 17 */
 /***/ (function(module, exports, __webpack_require__) {
 
 "use strict";
@@ -1462,11 +1574,11 @@ var _propTypes = __webpack_require__(4);
 
 var _propTypes2 = _interopRequireDefault(_propTypes);
 
-var _focusManager = __webpack_require__(17);
+var _focusManager = __webpack_require__(18);
 
 var focusManager = _interopRequireWildcard(_focusManager);
 
-var _scopeTab = __webpack_require__(18);
+var _scopeTab = __webpack_require__(19);
 
 var _scopeTab2 = _interopRequireDefault(_scopeTab);
 
@@ -1478,7 +1590,7 @@ var _refCount = __webpack_require__(8);
 
 var refCount = _interopRequireWildcard(_refCount);
 
-var _bodyClassList = __webpack_require__(19);
+var _bodyClassList = __webpack_require__(20);
 
 var bodyClassList = _interopRequireWildcard(_bodyClassList);
 
@@ -1529,28 +1641,23 @@ var ModalPortal = function (_Component) {
       // Remove body class
       bodyClassList.remove(_this.props.bodyOpenClassName);
 
-      if (_this.shouldReturnFocus()) {
-        focusManager.returnFocus();
-        focusManager.teardownScopedFocus();
+      if (_this.props.shouldFocusAfterRender) {
+        if (_this.props.shouldReturnFocusAfterClose) {
+          focusManager.returnFocus();
+          focusManager.teardownScopedFocus();
+        } else {
+          focusManager.popWithoutFocus();
+        }
       }
     };
 
-    _this.shouldReturnFocus = function () {
-      // Don't restore focus to the element that had focus prior to
-      // the modal's display if:
-      // 1. Focus was never shifted to the modal in the first place
-      //    (shouldFocusAfterRender = false)
-      // 2. Explicit direction to not restore focus
-      return _this.props.shouldFocusAfterRender || _this.props.shouldReturnFocusAfterClose;
-    };
-
     _this.open = function () {
       _this.beforeOpen();
       if (_this.state.afterOpen && _this.state.beforeClose) {
         clearTimeout(_this.closeTimer);
         _this.setState({ beforeClose: false });
       } else {
-        if (_this.shouldReturnFocus()) {
+        if (_this.props.shouldFocusAfterRender) {
           focusManager.setupScopedFocus(_this.node);
           focusManager.markForFocusLater();
         }
@@ -1846,7 +1953,7 @@ exports.default = ModalPortal;
 module.exports = exports["default"];
 
 /***/ }),
-/* 17 */
+/* 18 */
 /***/ (function(module, exports, __webpack_require__) {
 
 "use strict";
@@ -1859,6 +1966,7 @@ exports.handleBlur = handleBlur;
 exports.handleFocus = handleFocus;
 exports.markForFocusLater = markForFocusLater;
 exports.returnFocus = returnFocus;
+exports.popWithoutFocus = popWithoutFocus;
 exports.setupScopedFocus = setupScopedFocus;
 exports.teardownScopedFocus = teardownScopedFocus;
 
@@ -1914,6 +2022,10 @@ function returnFocus() {
 }
 /* eslint-enable no-console */
 
+function popWithoutFocus() {
+  focusLaterElements.length > 0 && focusLaterElements.pop();
+}
+
 function setupScopedFocus(element) {
   modalElement = element;
 
@@ -1939,7 +2051,7 @@ function teardownScopedFocus() {
 }
 
 /***/ }),
-/* 18 */
+/* 19 */
 /***/ (function(module, exports, __webpack_require__) {
 
 "use strict";
@@ -1958,23 +2070,69 @@ function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { de
 
 function scopeTab(node, event) {
   var tabbable = (0, _tabbable2.default)(node);
+
   if (!tabbable.length) {
+    // Do nothing, since there are no elements that can receive focus.
     event.preventDefault();
     return;
   }
-  var finalTabbable = tabbable[event.shiftKey ? 0 : tabbable.length - 1];
-  var leavingFinalTabbable = finalTabbable === document.activeElement ||
-  // handle immediate shift+tab after opening with mouse
-  node === document.activeElement;
-  if (!leavingFinalTabbable) return;
+
+  var shiftKey = event.shiftKey;
+  var head = tabbable[0];
+  var tail = tabbable[tabbable.length - 1];
+
+  // proceed with default browser behavior
+  if (node === document.activeElement) {
+    return;
+  }
+
+  var target;
+  if (tail === document.activeElement && !shiftKey) {
+    target = head;
+  }
+
+  if (head === document.activeElement && shiftKey) {
+    target = tail;
+  }
+
+  if (target) {
+    event.preventDefault();
+    target.focus();
+    return;
+  }
+
+  // Safari radio issue.
+  //
+  // Safari does not move the focus to the radio button,
+  // so we need to force it to really walk through all elements.
+  //
+  // This is very error prune, since we are trying to guess
+  // if it is a safari browser from the first occurence between
+  // chrome or safari.
+  //
+  // The chrome user agent contains the first ocurrence
+  // as the 'chrome/version' and later the 'safari/version'.
+  var checkSafari = /(\bChrome\b|\bSafari\b)\//.exec(navigator.userAgent);
+  var isSafariDesktop = checkSafari != null && checkSafari[1] != "Chrome" && /\biPod\b|\biPad\b/g.exec(navigator.userAgent) == null;
+
+  // If we are not in safari desktop, let the browser control
+  // the focus
+  if (!isSafariDesktop) return;
+
+  var x = tabbable.indexOf(document.activeElement);
+
+  if (x > -1) {
+    x += shiftKey ? -1 : 1;
+  }
+
   event.preventDefault();
-  var target = tabbable[event.shiftKey ? tabbable.length - 1 : 0];
-  target.focus();
+
+  tabbable[x].focus();
 }
 module.exports = exports["default"];
 
 /***/ }),
-/* 19 */
+/* 20 */
 /***/ (function(module, exports, __webpack_require__) {
 
 "use strict";
@@ -2011,7 +2169,7 @@ function remove(bodyClass) {
 }
 
 /***/ }),
-/* 20 */
+/* 21 */
 /***/ (function(module, exports, __webpack_require__) {
 
 var __WEBPACK_AMD_DEFINE_RESULT__;/*!
diff --git a/dist/react-modal.min.js b/dist/react-modal.min.js
index 39a1d567..e2a1411e 100644
--- a/dist/react-modal.min.js
+++ b/dist/react-modal.min.js
@@ -1,4 +1,4 @@
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diff --git a/package.json b/package.json
index 0e7482f9..615f84f4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-modal",
-  "version": "3.1.0",
+  "version": "3.1.2",
   "description": "Accessible modal dialog component for React.JS",
   "main": "./lib/index.js",
   "repository": {